Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Heat-conduction EVA (ethylene-vinyl acetate) packaging adhesive film for photovoltaic module and method for preparing adhesive film

A photovoltaic module and encapsulation adhesive film technology, applied in photovoltaic power generation, applications, adhesives, etc., can solve problems such as limited thermal conductivity, lowering the temperature of photovoltaic modules, and loss of EVA materials

Inactive Publication Date: 2013-04-17
CSI SOLAR POWER GROUP CO LTD +1
View PDF3 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention improves the thermal conductivity of the material by adding inorganic fillers to the weather-resistant resin, but the application of the weather-resistant resin loses the superiority of the EVA material in terms of processing performance while improving the weather resistance of the material, while the powdered inorganic The heat conduction effect increased by the filler is also relatively limited
[0004] If insulating and thermally conductive fillers can be added to the EVA packaging film, the thermal conductivity of the EVA packaging film can be enhanced, thereby reducing the temperature of the photovoltaic module during use and increasing the efficiency and output power of the photovoltaic module. However, this has not yet occurred. s material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] A heat-conducting EVA encapsulation adhesive film for photovoltaic modules, comprising the following raw material components in weight percentage: vinyl acetate content of 20wt% EVA82.4wt%, 5wt% of aluminum oxide whiskers with a diameter of 0.5 μm, short whiskers with a length of 100 μm Cut glass fiber 5wt%, titanium dioxide with a particle size of 10nm-100nm 5wt%, tris(nonylphenyl) phosphite 0.4wt%, tert-butyl peroxycarbonate-2-ethylhexyl 1wt%, γ- 0.2wt% methacryloxypropyltrimethoxysilane, 1wt% dioctyl phthalate.

[0083] The thermally conductive EVA encapsulation film for the above-mentioned photovoltaic module is prepared according to the following method:

[0084] (1) Take 30wt% of the total weight of γ-methacryloxypropyltrimethoxysilane and add it to the ethanol solution so that its concentration in the ethanol solution ranges from 1wt% to 2wt%, at a rate of 50-80rpm Stir evenly to fully dissolve to obtain a thickener solution;

[0085] (2) Add alumina whiskers, ...

Embodiment 2

[0094] A heat-conducting EVA encapsulation adhesive film for photovoltaic modules, comprising the following raw material components by weight percentage: the content of vinyl acetate is 30wt% EVA69.8wt%, the diameter is 10wt% of magnesium oxide whiskers of 1 μm, and the length is 200 μm. 10wt% glass fiber, 5wt% barium white with a particle size of 100nm, 0.4wt% tris(2,4-di-tert-butylphenyl) phosphite, β-(3,5-di-tert-butyl-4-hydroxy 0.4wt% n-octadecyl phenyl) propionate, 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane 2wt%, γ-glycidyl ether oxypropyl trimethyl Oxysilane 0.4wt%, trioctyl phosphate 2wt%.

[0095] The thermally conductive EVA encapsulation film for the above-mentioned photovoltaic module is prepared according to the following method:

[0096] (1) Take 20wt% of the total weight of γ-glycidyl etheroxypropyl trimethoxysilane and add it to the ethanol solution, so that the concentration range in the ethanol solution is 0.2wt%-3wt%, stir evenly to fully dissolve, To obt...

Embodiment 3

[0106] A heat-conducting EVA packaging adhesive film for photovoltaic modules, comprising the following raw material components by weight percentage: vinyl acetate content of 10wt% EVA93.8wt%, 2wt% of silicon carbide whiskers with a diameter of 0.05 μm, short whiskers with a length of 10 μm Cut glass fiber 2wt%, zinc white with a particle size of 10nm 1wt%, 3-(1,1-dimethylethyl)-β-[3-(1,1-dimethylethyl)-4-hydroxy Phenyl]-4-hydroxy-β-methylbenzoic acid-1,2-ethylene ester 0.1wt%, 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane 0.5wt%, γ-aminopropyltriethoxysilane 0.1wt%, dioctyl phthalate 0.3wt%, tricresyl phosphate 0.2wt%.

[0107] The thermally conductive EVA encapsulation film for the above-mentioned photovoltaic module is prepared according to the following method:

[0108] (1) Take 40wt% of the total weight of γ-aminopropyltriethoxysilane and add it to the ethanol solution, so that the concentration range in the ethanol solution is 0.5wt%-2.5wt%, stir evenly to fully dissolve...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates heat-conduction EVA packaging adhesive film for a photovoltaic module and a method for preparing the adhesive film. The adhesive film comprises, by weight, 47wt% to 93.8wt% of EVA, 5wt% to 40wt% of a heat-conduction filler, 0.1wt% to 2wt% of an anti-aging auxiliary, 0.5wt% to 5wt% of a cross-linking agent, 0.1wt% to 1wt% of a tackifier and 0.5wt% to 5wt% of a plasticizer. According to the heat-conduction EVA packaging adhesive film for photovoltaic modules and the method for preparing the adhesive film, the high heat conduction modified inorganic filler is introduced in low heat conduction organic macromolecules, so that organic macromolecules in continuous phases and the inorganic filler in a dispersed phase in a whole system are mixed into a whole; and the adhesive film with a uniform thickness is molded through a rolling process, the heat conductivity and the light reflectance can be obviously enhanced, and further the efficiency and the output power of the photovoltaic module are improved.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and relates to an EVA adhesive film for a solar photovoltaic module, in particular to a heat-conducting EVA packaging adhesive film for a photovoltaic module and a preparation method thereof. Background technique [0002] Photovoltaic modules, or solar panels, are one of the core components of solar photovoltaic power generation systems, consisting of pre-arranged crystalline silicon cells laminated between ultra-thin, transparent, high-strength glass and a sealed bottom layer. EVA (ethylene-vinyl acetate copolymer) has become a commonly used packaging material for photovoltaic modules due to its significant advantages in sealing, adhesion, durability, and optical properties. However, most of the existing EVA film is a poor conductor of heat. During the use of photovoltaic modules, the heat generated by factors such as solar radiation and its own thermal resistance cannot be conducted ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09J7/00C09J123/08C09J11/04H01L31/048B29C69/02B29B7/00B29L7/00
CPCY02E10/50
Inventor 刘平磊唐景彭丽霞傅冬华
Owner CSI SOLAR POWER GROUP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com